Bug 25400: [< 20.05] Fix cloning of circulation rules

Bug 25400: [< 20.05] Fix cloning of circulation rules

This patch is for 19.11 and anterior versions.

The clone functionnality does not clone the "already moved rules"
maxissueqty and maxonsiteissueqty.

Test plan:
Clone some circ rules from one branch to another
Confirm that all the rules have been copied correctly

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Tested on 19.11, no errors

Signed-off-by: Joy Nelson <joy@bywatersolutions.com>